Hla -sectional Tsim thiab Clamping Force Stability ntawm Elastic Rail Clips
Dab tsi yog qhov cross-sectional design nta ntawm Ω-type rail clips?
Tus ntoo khaub lig- ntu ntawm Ω- hom kev tsheb ciav hlau clips yog Ω- zoo li tus, thiab lub vojvoog nkhaus ntawm nruab nrab arc seem yog 35 hli, uas yog lub ntsiab deformation cheeb tsam ntawm txoj kev tsheb ciav hlau clip thiab tuaj yeem muab lub zog clamping ruaj khov. Nws tus ntoo khaub lig-sectional thickness maj mam hloov ntawm nruab nrab mus rau ob qho kawg, nrog rau nruab nrab tuab ntawm 14mm thiab qhov kawg thickness ntawm 10mm, uas tsis tsuas yog ua kom lub elastic deformation muaj peev xwm ntawm nruab nrab seem tab sis kuj txhim khu kev sib txuas lub zog ntawm ob qho kawg. Tus ntoo khaub lig-sectional centroid txoj hauj lwm ntawm Ω- hom kev tsheb ciav hlau clip yog qhov tseeb, thiab qhov kev faib tawm kev ntxhov siab zoo ib yam thaum muaj kev ntxhov siab, tsis muaj kev ntxhov siab hauv zos, thiab kev qaug zog ua haujlwm zoo heev. Lub clamping quab yuam ntawm lub tsheb ciav hlau clip nrog tus ntoo khaub lig no{12}}sectional tsim tuaj yeem ncav cuag 10-12kN, haum rau 50kg / m thiab 60kg / m rails, thiab siv tau rau cov pa ceev thiab hnyav- tsheb ciav hlau. Tsis tas li ntawd, qhov kawg ntawm Ω-hom rail clip yog nruab nrog cov qauv sib txuas, uas tuaj yeem ua tiav nrog lub rooj zaum ntawm lub txaj pw, nrog kev yooj yim installation thiab txhim khu kev qha.
Qhov kev ua tau zoo li cas W-type rail clips muaj tshaj Ω-hom rail clips?
Tus ntoo khaub lig- ntu ntawm W- hom kev tsheb ciav hlau clips yog W- zoo li tus, nrog rau ob qho kev ywj pheej deformed arc seem, thiab clamping quab yuam hloov ntau yam dav dua, uas tuaj yeem hloov kho ntawm 8-15kN, hloov mus rau qhov sib txawv rail specifications thiab kab yuav tsum tau. Nws tus ntoo khaub lig-sectional thickness yog ntau yam sib xws, 12 hli, thiab cov kev ntxhov siab faib ntau dua li ntawm Ω- hom kev tsheb ciav hlau clips, nrog lub neej qaug zog ntau dua 3 lab lub sij hawm, siab dua 2 lab lub sij hawm tus qauv ntawm Ω- hom rail clips. W- hom kev tsheb ciav hlau clips muaj peev xwm tiv thaiv sab nraud, tuaj yeem tiv taus qhov kev hloov pauv ntawm cov ntsia hlau sab nraud, thiab tshwj xeeb tshaj yog siv rau hauv me me - vojvoog nkhaus seem. Lub installation qhov siab ntawm txoj kev tsheb ciav hlau yog qis dua, uas tuaj yeem txo qhov siab tag nrho ntawm cov qauv kev taug qab thiab hloov mus rau qhov kev xav tau ntawm kev thauj mus los hauv nroog. Tib lub sijhawm, W- hom kev tsheb ciav hlau clip muaj cov khoom siv ntau dua, txuag 10% ntawm cov hlau piv nrog Ω-hom rail clip, thiab muaj kev lag luam thiab kev tiv thaiv ib puag ncig.
Cov kab xwm txheej twg yog tus ntoo khaub lig-cov qauv tsim ntawm txawv teb chaws tus qauv SKL- hom rail clips haum rau?
Tus ntoo khaub lig- ntu ntawm txawv teb chaws tus qauv SKL- hom kev tsheb ciav hlau clips txais kev tsim asymmetric, nrog rau qhov loj arc curvature ntawm ib sab thiab ib qho me me curvature ntawm lwm sab, uas tuaj yeem muab qhov sib txawv elastic deformation thiab hloov mus rau cov qauv nruj ntawm ballastless lem. Nws tus ntoo khaub lig-sectional thickness yog 15 hli, thiab lub clamping quab yuam tuaj yeem ncav cuag 18-22kN, ntau dua li ntawm lub teb chaws tus qauv tsheb ciav hlau, haum rau siab - txoj kev tsheb ciav hlau ceev nrog kev ceev ntawm 350 km / h, uas tuaj yeem txhim kho cov kev sib tw zoo thiab ua kom cov kev sib tw khiav zoo. Qhov kawg ntawm tus ntoo khaub lig- ntu ntawm SKL- hom kev tsheb ciav hlau clip yog nruab nrog cov qauv hloov kho, uas tuaj yeem kho lub zog clamping los ntawm kev tig, thiab tuaj yeem hloov mus rau qhov sib txawv ntawm kev sib haum xeeb deformations yam tsis tau hloov cov tsheb ciav hlau, nrog kev saib xyuas yooj yim. Lub tsheb ciav hlau clip nrog tus ntoo khaub lig no -sectional tsim muaj zoo heev qaug zog tiv thaiv. Tom qab 5 lab alternating load tests, lub clamping quab yuam attenuation tus nqi tsawg dua los yog sib npaug rau 5%, thiab lub neej kev pab cuam yuav ncav cuag ntau tshaj 20 xyoo. Tsis tas li ntawd, SKL- hom kev tsheb ciav hlau clip muaj qhov ua tau zoo ntawm kev rwb thaiv tsev, nrog lub tes tsho ua ke, haum rau cov hluav taws xob railways nrog cov qib high voltage.
Yuav ua li cas los txhim kho qhov kev ntxhov siab ntawm qhov chaw tsheb ciav hlau hla -section?
Cov cheeb tsam kev ntxhov siab ntawm txoj kev tsheb ciav hlau hla- ntu feem ntau yog nyob rau ntawm qhov kev hloov pauv thiab qhov kawg sib txuas. Lub hauv paus ntawm optimization yog ua kom cov curvature vojvoog ntawm txoj kev hloov arc. Ua kom lub vojvoog arc los ntawm 25mm mus rau 35mm tuaj yeem txo qhov kev ntxhov siab ntau dua 30%. Txais yuav ib tug gradient thickness tsim nyob rau hauv kawg nuv txoj hauj lwm kom tsis txhob tam sim ntawd thickness hloov, ua rau cov kev ntxhov siab hloov smoothly, thiab tiv thaiv cov kab nrib pleb ntawm tus nuv. Siv finite element tsom xam software los simulate lub xeev kev ntxhov siab ntawm txoj kev tsheb ciav hlau clip, nrhiav kom raug cov cheeb tsam kev ntxhov siab, kho tus ntoo khaub lig-sectional shape nyob rau hauv lub hom phiaj, thiab xyuas kom meej cov kev nyuaj siab sib xws. Nyob rau hauv tus txheej txheem ntawm tus ntoo khaub lig{10}}sectional optimization, nws yog ib qhov tsim nyog los sib npaug ntawm elastic deformation peev xwm ntawm txoj kev tsheb ciav hlau clip kom tsis txhob muaj qhov txo qis ntawm clamping quab yuam tshwm sim los ntawm ntau dhau ua rau lub vojvoog arc. Tsis tas li ntawd, ua qhov kev ntsuam xyuas kev qaug zog ntawm qhov ua kom zoo dua qub -section kom ntseeg tau tias kev qaug zog ua tau raws li txoj cai siv kab.
Yuav ua li cas kom ntseeg tau qhov ntev - lub sij hawm stability ntawm rail clip clamping quab yuam?
Cov khoom siv ntawm cov tsheb ciav hlau yuav tsum yog siab- lub zog caij nplooj ntoos hlav steel 60Si2MnA, kho nrog quenching + nruab nrab-kub tempering, thiab hardness yuav tsum tau tswj ntawm HRC42-46 kom ntseeg tau zoo elasticity thiab qaug zog. Tus ntoo khaub lig-sectional tsim ntawm txoj kev tsheb ciav hlau clip yuav tsum yog qhov tseeb, thiab qhov kev faib tawm kev ntxhov siab yuav tsum tau ua kom zoo dua los ntawm kev sim ua kom tiav kom tsis txhob muaj kev cuam tshuam los ntawm kev ntxhov siab hauv zos. Thaum lub sij hawm installation, lub pre{11}}compression npaum li cas ntawm rail clip yuav tsum tau nruj me ntsis tswj. Lub pre{12}}compression npaum li cas ntawm Ω{19}} hom tsheb ciav hlau clip yog 12 hli, nrog rau qhov sib txawv tsawg dua los yog sib npaug li 1 hli los xyuas kom meej tias qhov pib clamping quab yuam ua tau raws li tus qauv. Tsis tu ncua xyuas lub clamping quab yuam ntawm txoj kev tsheb ciav hlau clip siv lub tshwj xeeb clamping quab yuam tester, ib zaug txhua 6 lub hlis, thiab raws sij hawm hloov cov rail clips uas clamping quab yuam attenuation tshaj 15%. Tsis tas li ntawd, ua los tiv thaiv- kev kho corrosion ntawm qhov chaw ntawm txoj kev tsheb ciav hlau, txais yuav kub-dip galvanizing lossis Dacromet txheej txheem los tiv thaiv kev ua haujlwm degradation los ntawm xeb thiab txuas ntxiv lub neej kev pab cuam.